US4858091A - Luminaire with uplight control - Google Patents

Luminaire with uplight control Download PDF

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Publication number
US4858091A
US4858091A US07/127,339 US12733987A US4858091A US 4858091 A US4858091 A US 4858091A US 12733987 A US12733987 A US 12733987A US 4858091 A US4858091 A US 4858091A
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United States
Prior art keywords
refractor
sidewall
luminaire
light rays
prisms
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US07/127,339
Inventor
Herbert A. Fouke
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ABL IP Holding LLC
Holophane Corp
Original Assignee
Manville Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Manville Corp filed Critical Manville Corp
Priority to US07/127,339 priority Critical patent/US4858091A/en
Assigned to MANVILLE CORPORATION, A CORP. OF DE. reassignment MANVILLE CORPORATION, A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FOUKE, HERBERT A.
Priority to EP88119860A priority patent/EP0318908A3/en
Priority to NO88885347A priority patent/NO885347L/en
Priority to ZA888977A priority patent/ZA888977B/en
Priority to DK667688A priority patent/DK667688A/en
Assigned to WELLS FARGO BANK, N.A., reassignment WELLS FARGO BANK, N.A., SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HOLOPHANE COMPANY, INC.
Assigned to HOLOPHANE COMPANY, INC., A CORP. OF DE reassignment HOLOPHANE COMPANY, INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MANVILLE CORPORATION
Application granted granted Critical
Publication of US4858091A publication Critical patent/US4858091A/en
Assigned to HOLOPHANE LIGHTING, INC. reassignment HOLOPHANE LIGHTING, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MANVILLE CORPORATION
Assigned to HOLOPHANE CORPORATION reassignment HOLOPHANE CORPORATION MERGER (SEE DOCUMENT FOR DETAILS). Assignors: HOLOPHANE LIGHTING, INC.
Assigned to WELLS FARGO BANK, N.A., AS AGENT reassignment WELLS FARGO BANK, N.A., AS AGENT FIRST AMENDMENT TO PATENT SECURITY AGREEMENT AND SECOND AMENDMENT TO SUPPLEMENTAL PATENT SECURITY AGREEMENT Assignors: HOLOPHANE CORPORATION, SUCCESSOR BY MERGER TO HOLOPHANE LIGHTING, INC., A DELAWARE CORPORATION
Assigned to HOLOPHANE CORPORATION (SUCCESSOR BY MERGER TO HOLOPHANE LIGHTING, INC.) A DELAWARE CORPORATION reassignment HOLOPHANE CORPORATION (SUCCESSOR BY MERGER TO HOLOPHANE LIGHTING, INC.) A DELAWARE CORPORATION RELEASE OF PATENT AGREEMENTS Assignors: WELLS FARGO BANK, N.A., AS AGENT
Assigned to ACUITY BRANDS, INC. (FORMERLY KNOWN AS L & C SPINCO, INC.) reassignment ACUITY BRANDS, INC. (FORMERLY KNOWN AS L & C SPINCO, INC.) NUNC PRO TUNC ASSIGNMENT (SEE DOCUMENT FOR DETAILS). Assignors: NSI ENTERPRISES, INC. (NOW KNOWN AS NATIONAL SERVICE INDUSTRIES, INC.)
Anticipated expiration legal-status Critical
Assigned to ABL IP HOLDING, LLC reassignment ABL IP HOLDING, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ACUITY BRANDS, INC
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources

Definitions

  • the present invention relates to a improved luminaire with uplight control and more particularly to a luminaire with an HID light source having uplight control and low glare.
  • Certain types of industries commonly referred to as "light industrial” and certain commercial areas such as supermarkets etc. can advantageously employ luminaires with a relatively large amount of upward light, that is light emitted above horizontal or just below horizontal.
  • Such areas generally have either finished ceilings or a truss area painted a light color.
  • a large percentage of the uplight is reflected down to the work surface.
  • luminaires using HID light sources to produce large percentages of uplight do so by utilizing leakage light through prismatic glass reflectors.
  • the uplight has been generally uncontrolled and the illumination on the ceiling is not uniform and usually has a very hot spot directly above the luminaire.
  • the present invention utilizes a refracting medium of glass or plastic with prismatic structures such that the upward light is controlled to produce a uniformly lit ceiling area.
  • the present invention provides a luminaire comprising an HID light source, a first refractor means for providing uniform uplight illumination through distribution of light rays and a second refractor means for distributing light rays below horizontal.
  • FIG. 1A shows a candlepower distribution curve for luminaires of the type discussed of the prior art.
  • FIG. I illustrates a luminaire in accordance with the present invention.
  • FIG. II illustrates the distribution of upward light from two luminaires in accordance with the present invention.
  • FIG. III illustrates a typical candlepower distribution curve for a luminaire of FIG. I.
  • FIG. IV shows a variation in accordance with the present invention of the luminaire illustrated in FIG. I.
  • FIG. V illustrates a typical candlepower distribution curve for a luminaire as shown in FIG. IV.
  • FIG. VI is a cross-section view taken through A--A in FIG. I.
  • FIG. VII is a large scale view of the diffusing prisms shown in FIGS. I, IV and VI.
  • FIG. 1A there is shown a candlepower distribution curve for the prior art type luminaires in which luminaires using HID sources producing large percentages of uplight do so by utilizing the leakage light through prismatic glass reflectors.
  • a luminaire generally identified by the reference numeral 1 has an HID light source 2 engaged in an electrical socket 4 and is provided with an upper glass or plastic refractor generally identified by the reference numeral 6 having a sidewall 12 and a generally horizontal portion 8 encircling a luminaire hanger 10. It also includes a lower glass or plastic refractor generally identified by the reference numeral 14 having a generally horizontal portion 16 and a sidewall 18.
  • a plurality of prisms 20 are formed on the inside of the generally horizontal portion 8 of the upper refractor.
  • Light rays 22 emitted from the light source 2 strike the refractor 6 and are diverted by the prisms 20 so that the exiting light rays 24 are turned away from directly above the luminaire 1 thus reducing the brightness above the luminaire.
  • a plurality of prisms 26 are formed on the outside of the sidewall 12 of the upper refractor 6. Light rays 28 from the light source 2 strike the upper refractor 6 and are diverted by the prisms 26 so that exiting light rays 30 are elevated above horizontal and sent to a ceiling area at a point half way between two widely spaced luminaires 32 and 34, as shown in FIG. II thus increasing the illumination of the ceiling.
  • the luminaires 32 and 34 for example, are normally spaced up to 1.7 times their mounting height.
  • the effect of the upper refractor 6 is that a uniformity of illumination on the ceiling is achieved which is much greater than if the same amount of light had been sent toward the ceiling without being redirected by the refractor 6.
  • a plurality of prisms 32 are formed on the outer surface of the sidewall 18 of the refractor 14. Light rays 34 from the light source 2 are diverted by the prisms 32 so that existing light rays 36 are directed down below horizontal by an angle greater than 30°.
  • a plurality of prisms 38 are formed on the outer surface of the substantially horizontal portion 16 of the refractor 14. Light rays 40 are diverted by the prisms 38 at varying degrees below horizontal to exit as light rays 42 at angles greater than light rays 32 thus concentrating the light emitted below horizontal into a relatively concentrated distribution which allows spacing these luminaires up to 1.7 times their mounting height.
  • FIG. III A typical candlepower distribution curve for the luminaire described above and illustrated in FIG. I is shown in FIG. III.
  • the distribution of this luminaire has approximately 40% of the light emitted by the luminaire in the 0°-90° zone (below horizontal) and 60% of the light in the 90°-180° zone (above horizontal).
  • the refractors 6 and 14 In addition to the refractors 6 and 14 turning light above and below horizontal out of the glare zone from 60°-90° vertical the refractors have formed on the inner surfaces of their sidewall portions vertical diffusing prisms 48 as shown in FIGS. I, IV and VI.
  • FIG. VI is a cross-section view taken through A--A in FIG. I.
  • FIG. VII is an enlarged view of the vertical diffusing prisms 48.
  • the vertical diffusing prisms 48 have curved surfaces such that light rays 50 are diverted laterally at varying angles to be emitted as light rays 52. These light rays are spread laterally through a range of about ⁇ 62°. The entire width of the sidewalls of refractors 6 and 14 appear to be evenly bright thus reducing the average brightness of the sidewalls.

Abstract

An improved luminaire having uplight control to provide uniform ceiling illumination and downward light control below horizontal to uniformly distribute downward light with the added feature of eliminating glare between the 60°-90° vertical.

Description

The present invention relates to a improved luminaire with uplight control and more particularly to a luminaire with an HID light source having uplight control and low glare.
BACKGROUND OF THE INVENTION
Certain types of industries, commonly referred to as "light industrial" and certain commercial areas such as supermarkets etc. can advantageously employ luminaires with a relatively large amount of upward light, that is light emitted above horizontal or just below horizontal. Such areas generally have either finished ceilings or a truss area painted a light color. Thus a large percentage of the uplight is reflected down to the work surface.
Providing a higher percentage of uplight in these types of areas produces several advantages such as:
(a) superior appearance of the environment due to greater illumination on ceiling and vertical surfaces;
(b) reflected light from ceilings and walls results in more light from more directions reaching a work area; and
(c) better vertical surface lighting.
Prior to the present invention luminaires using HID light sources to produce large percentages of uplight do so by utilizing leakage light through prismatic glass reflectors. Thus, the uplight has been generally uncontrolled and the illumination on the ceiling is not uniform and usually has a very hot spot directly above the luminaire.
The present invention utilizes a refracting medium of glass or plastic with prismatic structures such that the upward light is controlled to produce a uniformly lit ceiling area.
SUMMARY OF THE INVENTION
Accordingly, the present invention provides a luminaire comprising an HID light source, a first refractor means for providing uniform uplight illumination through distribution of light rays and a second refractor means for distributing light rays below horizontal.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1A shows a candlepower distribution curve for luminaires of the type discussed of the prior art.
FIG. I illustrates a luminaire in accordance with the present invention.
FIG. II illustrates the distribution of upward light from two luminaires in accordance with the present invention.
FIG. III illustrates a typical candlepower distribution curve for a luminaire of FIG. I.
FIG. IV shows a variation in accordance with the present invention of the luminaire illustrated in FIG. I.
FIG. V illustrates a typical candlepower distribution curve for a luminaire as shown in FIG. IV.
FIG. VI is a cross-section view taken through A--A in FIG. I.
FIG. VII is a large scale view of the diffusing prisms shown in FIGS. I, IV and VI.
DESCRIPTION OF THE INVENTION
Referring to FIG. 1A there is shown a candlepower distribution curve for the prior art type luminaires in which luminaires using HID sources producing large percentages of uplight do so by utilizing the leakage light through prismatic glass reflectors.
In the present invention as shown in FIG. 1 a luminaire generally identified by the reference numeral 1 has an HID light source 2 engaged in an electrical socket 4 and is provided with an upper glass or plastic refractor generally identified by the reference numeral 6 having a sidewall 12 and a generally horizontal portion 8 encircling a luminaire hanger 10. It also includes a lower glass or plastic refractor generally identified by the reference numeral 14 having a generally horizontal portion 16 and a sidewall 18.
A plurality of prisms 20 are formed on the inside of the generally horizontal portion 8 of the upper refractor.
Light rays 22 emitted from the light source 2 strike the refractor 6 and are diverted by the prisms 20 so that the exiting light rays 24 are turned away from directly above the luminaire 1 thus reducing the brightness above the luminaire.
A plurality of prisms 26 are formed on the outside of the sidewall 12 of the upper refractor 6. Light rays 28 from the light source 2 strike the upper refractor 6 and are diverted by the prisms 26 so that exiting light rays 30 are elevated above horizontal and sent to a ceiling area at a point half way between two widely spaced luminaires 32 and 34, as shown in FIG. II thus increasing the illumination of the ceiling. The luminaires 32 and 34 for example, are normally spaced up to 1.7 times their mounting height.
The effect of the upper refractor 6 is that a uniformity of illumination on the ceiling is achieved which is much greater than if the same amount of light had been sent toward the ceiling without being redirected by the refractor 6.
A plurality of prisms 32 are formed on the outer surface of the sidewall 18 of the refractor 14. Light rays 34 from the light source 2 are diverted by the prisms 32 so that existing light rays 36 are directed down below horizontal by an angle greater than 30°.
A plurality of prisms 38 are formed on the outer surface of the substantially horizontal portion 16 of the refractor 14. Light rays 40 are diverted by the prisms 38 at varying degrees below horizontal to exit as light rays 42 at angles greater than light rays 32 thus concentrating the light emitted below horizontal into a relatively concentrated distribution which allows spacing these luminaires up to 1.7 times their mounting height.
A typical candlepower distribution curve for the luminaire described above and illustrated in FIG. I is shown in FIG. III.
As illustrated in FIG. III the distribution of this luminaire has approximately 40% of the light emitted by the luminaire in the 0°-90° zone (below horizontal) and 60% of the light in the 90°-180° zone (above horizontal).
By modifying some of the prisms 26 in the luminaire illustrated in FIG. I to turn the light rays 28 down instead of up toward the ceiling, a greater percentage of light from the luminaire can be sent in the 0°-90° zone. This luminaire shown in FIG. IV would have 60% of its light in the 0°-90° zone and 40% in the 90°-180° zone as illustrated in the candlepower distribution curve shown in FIG. V.
As is evident from FIG. IV by varying the width of the section sending light below horizontal these percentages can be varied.
In addition to the refractors 6 and 14 turning light above and below horizontal out of the glare zone from 60°-90° vertical the refractors have formed on the inner surfaces of their sidewall portions vertical diffusing prisms 48 as shown in FIGS. I, IV and VI.
FIG. VI is a cross-section view taken through A--A in FIG. I.
FIG. VII is an enlarged view of the vertical diffusing prisms 48.
The vertical diffusing prisms 48 have curved surfaces such that light rays 50 are diverted laterally at varying angles to be emitted as light rays 52. These light rays are spread laterally through a range of about ±62°. The entire width of the sidewalls of refractors 6 and 14 appear to be evenly bright thus reducing the average brightness of the sidewalls.
Whereas the foregoing detailed description has been provided for clearness of understanding, it should be understood that other and further modifications, apart from those disclosed or suggested herein, may be made within the spirit and scope of the invention.

Claims (3)

I claim:
1. A luminaire comprising an HID light source, a first refractor having a substantially horizontal portion and a sidewall, prisms formed on the inner surface of said horizontal portion of said first refractor for the upward distribution of light rays, prisms formed on the outer surface of said sidewall of said first refractor for directing light rays upward from the horizontal, and prisms formed on the exterior of the sidewall of said first refractor for directing light rays below horizontal by an angle greater than 30° and a second refractor having a substantially horizontal portion and a sidewall, prisms formed on the exterior surface of said horizontal portion of said second refractor for directing light downward and prisms formed on the sidewall of said second refractor for directing light rays below horizontal by an angle greater than 30°.
2. A luminaire comprising an HID light source, a first refractor having a substantially horizontal portion and a sidewall, prisms formed on the inner surface of said horizontal portion of said first refractor for the upward distribution of light rays, prisms formed on the outer surface of said sidewall of said first refractor for directing light rays upward from the horizontal, a second refractor having a substantially horizontal portion and a sidewall, prisms formed on the exterior surface of said horizontal portion of said second refractor for directing light downward and prisms formed on the sidewall of said second refractor for directing light rays below horizontal by an angle greater than 30° and including vertical diffusing prisms formed on the inner surface of the sidewall of said first refractor and the sidewall of said second refractor to eliminate glare.
3. A luminaire as recited in claim 1 wherein vertical diffusing prisms are formed on the inner surfaces of the sidewall of said first refractor and the sidewall of said second refractor to eliminate glare.
US07/127,339 1987-12-01 1987-12-01 Luminaire with uplight control Expired - Lifetime US4858091A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US07/127,339 US4858091A (en) 1987-12-01 1987-12-01 Luminaire with uplight control
EP88119860A EP0318908A3 (en) 1987-12-01 1988-11-29 An improved luminaire with uplight control
NO88885347A NO885347L (en) 1987-12-01 1988-11-30 LIGHTING LIGHT WITH INFORMATION CONTROL.
ZA888977A ZA888977B (en) 1987-12-01 1988-11-30 Luminaire with uplight control
DK667688A DK667688A (en) 1987-12-01 1988-11-30 IMPROVED LIGHTING LIGHT WITH CONTROLLED, UPDATE LIGHT

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Application Number Priority Date Filing Date Title
US07/127,339 US4858091A (en) 1987-12-01 1987-12-01 Luminaire with uplight control

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US4858091A true US4858091A (en) 1989-08-15

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US07/127,339 Expired - Lifetime US4858091A (en) 1987-12-01 1987-12-01 Luminaire with uplight control

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EP (1) EP0318908A3 (en)
DK (1) DK667688A (en)
NO (1) NO885347L (en)
ZA (1) ZA888977B (en)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5416684A (en) * 1992-03-27 1995-05-16 General Electric Company Luminaire having predominantly refractive downlight capabilities
US5434765A (en) * 1994-03-10 1995-07-18 Holophane Corporation Luminaire assembly
US5863115A (en) * 1994-05-03 1999-01-26 Simon; Jerome H. Decorative illumination system
USD420163S (en) * 1999-02-03 2000-02-01 Holophane Corporation Suspended luminaire
US6027231A (en) * 1997-12-24 2000-02-22 Holophane Corporation Luminaire assembly
US6132066A (en) * 1999-02-01 2000-10-17 Holophane Corporation Optical unit for aisle lighting
US6247833B1 (en) * 1998-07-24 2001-06-19 Jerome Neustadt Lamp for refracting light and junction box
US6273596B1 (en) * 1997-09-23 2001-08-14 Teledyne Lighting And Display Products, Inc. Illuminating lens designed by extrinsic differential geometry
US6361191B1 (en) * 1998-09-29 2002-03-26 Jerome H. Simon Off-axis and segment collimation and projection
US20050099817A1 (en) * 2003-11-10 2005-05-12 Lin Kuo K. Ceiling fixture
US6945675B2 (en) 2002-01-04 2005-09-20 Genlyte Thomas Group Llc Fascia wash luminaire
US20080219008A1 (en) * 2007-03-06 2008-09-11 Canlyte Inc. Lighting Device with Composite Reflector
US20080232111A1 (en) * 2007-02-28 2008-09-25 Canlyte Inc. Low Up-Light Cutoff Acorn Style Luminaire
US7494252B1 (en) 2006-06-29 2009-02-24 Genlyte Thomas Group Llc Compact luminaire enclosure
US7631993B2 (en) 2006-04-28 2009-12-15 Genlyte Thomas Group Llc Front trim ring for a vandal resistant luminaire
USD609381S1 (en) 2008-04-21 2010-02-02 Lumec, Inc. Luminaire
USD609382S1 (en) 2008-04-21 2010-02-02 Lumec Inc. Luminaire
USD609838S1 (en) 2008-12-01 2010-02-09 Koninklijke Philips Electronics N.V. Luminaire
USD610296S1 (en) 2009-01-12 2010-02-16 Koninklijke Philips Electronics N.V. Sconce light fixture
USD610295S1 (en) 2008-12-01 2010-02-16 Koninklijke Philips Electronics N.V. Luminaire
USD610288S1 (en) 2008-12-01 2010-02-16 Koninklijke Philips Electronics N.V. Luminaire
US7695169B2 (en) 2006-04-28 2010-04-13 Genlyte Thomas Group Llc Gasket system for a vandal resistant luminaire
US20100110658A1 (en) * 2008-10-08 2010-05-06 Peifer Donald A Semi-direct solid state lighting fixture and distribution
USD619293S1 (en) 2008-12-01 2010-07-06 Koninklijke Philips Electronics N.V. Luminaire
US7988327B1 (en) 2009-01-30 2011-08-02 Koninklijke Philips Electronics N.V. LED luminaire
USD652557S1 (en) 2010-08-18 2012-01-17 Koninklijke Philiips Electronics N.V. Luminaire for road lighting
USD652978S1 (en) 2010-08-18 2012-01-24 Koninklijke Philips Electronics N.V. Luminaire for road lighting
US20130294071A1 (en) * 2012-05-03 2013-11-07 Lighting Science Group Corporation Luminaire with prismatic optic
US9255685B2 (en) 2012-05-03 2016-02-09 Lighting Science Group Corporation Luminaire with prismatic optic
US11668443B2 (en) 2021-05-17 2023-06-06 Lsi Industries, Inc. Luminaire uplight device and related methods

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US5155668A (en) * 1991-03-08 1992-10-13 Siemens Solar Industries L.P. Solar powered lamp utilizing cold cathode fluorescent illumination and method of facilitating same

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US4384316A (en) * 1981-03-04 1983-05-17 Gte Products Corporation Outdoor luminaire with readily separable, two-part housing

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5416684A (en) * 1992-03-27 1995-05-16 General Electric Company Luminaire having predominantly refractive downlight capabilities
US5434765A (en) * 1994-03-10 1995-07-18 Holophane Corporation Luminaire assembly
US6116757A (en) * 1994-05-03 2000-09-12 Simon; Jerome H. Decorative illumination system
US5863115A (en) * 1994-05-03 1999-01-26 Simon; Jerome H. Decorative illumination system
US6273596B1 (en) * 1997-09-23 2001-08-14 Teledyne Lighting And Display Products, Inc. Illuminating lens designed by extrinsic differential geometry
US6027231A (en) * 1997-12-24 2000-02-22 Holophane Corporation Luminaire assembly
US6247833B1 (en) * 1998-07-24 2001-06-19 Jerome Neustadt Lamp for refracting light and junction box
US6361191B1 (en) * 1998-09-29 2002-03-26 Jerome H. Simon Off-axis and segment collimation and projection
US6132066A (en) * 1999-02-01 2000-10-17 Holophane Corporation Optical unit for aisle lighting
USD420163S (en) * 1999-02-03 2000-02-01 Holophane Corporation Suspended luminaire
US6945675B2 (en) 2002-01-04 2005-09-20 Genlyte Thomas Group Llc Fascia wash luminaire
US20050099817A1 (en) * 2003-11-10 2005-05-12 Lin Kuo K. Ceiling fixture
US7695169B2 (en) 2006-04-28 2010-04-13 Genlyte Thomas Group Llc Gasket system for a vandal resistant luminaire
US7631993B2 (en) 2006-04-28 2009-12-15 Genlyte Thomas Group Llc Front trim ring for a vandal resistant luminaire
US7494252B1 (en) 2006-06-29 2009-02-24 Genlyte Thomas Group Llc Compact luminaire enclosure
US7946734B2 (en) 2007-02-28 2011-05-24 Philips Electronics Ltd Low up-light cutoff acorn style luminaire
US20080232111A1 (en) * 2007-02-28 2008-09-25 Canlyte Inc. Low Up-Light Cutoff Acorn Style Luminaire
US7712929B2 (en) 2007-03-06 2010-05-11 Canlyte Inc. Lighting device with composite reflector
US20080219008A1 (en) * 2007-03-06 2008-09-11 Canlyte Inc. Lighting Device with Composite Reflector
USD609382S1 (en) 2008-04-21 2010-02-02 Lumec Inc. Luminaire
USD609381S1 (en) 2008-04-21 2010-02-02 Lumec, Inc. Luminaire
US20100110658A1 (en) * 2008-10-08 2010-05-06 Peifer Donald A Semi-direct solid state lighting fixture and distribution
USD619293S1 (en) 2008-12-01 2010-07-06 Koninklijke Philips Electronics N.V. Luminaire
USD610288S1 (en) 2008-12-01 2010-02-16 Koninklijke Philips Electronics N.V. Luminaire
USD609838S1 (en) 2008-12-01 2010-02-09 Koninklijke Philips Electronics N.V. Luminaire
USD610295S1 (en) 2008-12-01 2010-02-16 Koninklijke Philips Electronics N.V. Luminaire
USD610296S1 (en) 2009-01-12 2010-02-16 Koninklijke Philips Electronics N.V. Sconce light fixture
US7988327B1 (en) 2009-01-30 2011-08-02 Koninklijke Philips Electronics N.V. LED luminaire
USD652557S1 (en) 2010-08-18 2012-01-17 Koninklijke Philiips Electronics N.V. Luminaire for road lighting
USD652978S1 (en) 2010-08-18 2012-01-24 Koninklijke Philips Electronics N.V. Luminaire for road lighting
US20130294071A1 (en) * 2012-05-03 2013-11-07 Lighting Science Group Corporation Luminaire with prismatic optic
US9255685B2 (en) 2012-05-03 2016-02-09 Lighting Science Group Corporation Luminaire with prismatic optic
US9644814B2 (en) * 2012-05-03 2017-05-09 Lighting Science Group Corporation Luminaire with prismatic optic
US11668443B2 (en) 2021-05-17 2023-06-06 Lsi Industries, Inc. Luminaire uplight device and related methods

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DK667688D0 (en) 1988-11-30
ZA888977B (en) 1989-08-30
EP0318908A2 (en) 1989-06-07
NO885347L (en) 1989-06-02
DK667688A (en) 1989-06-02
EP0318908A3 (en) 1990-03-21
NO885347D0 (en) 1988-11-30

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